Contents of Volume XXV 



NUMBER I 



PAGE 



Symposium on the Age and Relations of the Fossil Human 

 Remains Found at Vero, Florida : 



editorial note i 



on the association of human remains and extinct verte- 

 BRATES at vero, Florida. E. H. Sellards .... 4 



INTERPRETATION OF THE FORMATIONS CONTAINING HUMAN BONES 



at vero, Florida. Rollin T. Chamberlin .... 25 



ON REPORTED PLEISTOCENE HUMAN REMAINS AT VERO, FLORIDA. 



Thomas Wayland Vaughan 40 



PRELIMINARY REPORT ON FINDS OF SUPPOSEDLY ANCIENT HUMAN 



remains at vero, Florida. Ales Hrdlicka .... 43 



THE QUATERNARY DEPOSITS AT VERO, FLORIDA, AND THE VERTE- 

 BRATE remains contained therein. Oliver P. Hay . . 52 



ARCHAEOLOGICAL EVIDENCES OF MAN'S ANTIQUITY AT VERO, 



Florida. George Grant MacCurdy ...... 56 



Suggestions for a Quantitative Mineralogical Classification of 



Igneous Rocks. Albert Johannsen 63 



Reviews 98 



NUMBER II 



On the Hypothesis of Isostasy. W. D. MacMillan .... 105 

 The Middle Paleozoic Stratigraphy of the Central Rocky 



Mountain Region. I. C. W. Tomlinson . . . . . 112 

 Some Factors Affecting the Development of Mud-Cracks. E. M. 



Kindle 135 



Downwarping Along Joint Planes at the Close of the Niagaran 



and Acadian. Lancaster D. Burling 145 



The Western Interior Geosyncline and Its Bearing on the Origin 



and Distribution of the Coal Measures. Francis M. Van Tuyl 1 50 



A Decimal Grouping of the Plagioclases. F. C. Calkins . . 157 



Studies for Students: A Classification of Breccias. W. H. 



Norton 160 



Reviews .............. 195 



